High passive damping in a NiTi shape memory alloy fiber aluminum metal matrix composite

William D. Armstrong; Per G. Reinhall

doi:10.1117/12.388234

14 June 2000 High passive damping in a NiTi shape memory alloy fiber aluminum metal matrix composite

William D. Armstrong, Per G. Reinhall

Proceedings Volume 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics; (2000) https://doi.org/10.1117/12.388234
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

Vibration control in structures often requires the addition of viscoelastic constrained layer damping treatments. In critical applications, however, the low strength of the viscoelastic material and the threat of delamination prevent the use of these treatments. In this paper we present a means of how to overcome these difficulties by using high strength shape NiTi fibers to increase the damping of aluminum structures. Specifically, we show that the introduction of high strength, shape memory alloy fibers into an aluminum beam can result in a significant increase in the passive damping response of the beam. The objective of our research is to develop passive and active structural materials that can be sued in applications that demand high loss factors, strength, and high reliability. The development of the NiTi fiber reinforced aluminum matrix composite beam is a first important step towards achieving this objective.

Citation Download Citation

William D. Armstrong and Per G. Reinhall "High passive damping in a NiTi shape memory alloy fiber aluminum metal matrix composite", Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); https://doi.org/10.1117/12.388234

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